Compilare: user.cpp: In function ‘void RemoveEdge(int, int)’: user.cpp:41:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pointerX<g[nodeX].size()&&(seen[g[nodeX][pointerX]]==updates||color[g[nodeX][pointerX]]!=color[x]||g[nodeX][pointerX]==y)) ^ user.cpp:43:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pointerX<g[nodeX].size()){ ^ user.cpp:57:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pointerY<g[nodeY].size()&&(seen[g[nodeY][pointerY]]==updates||color[g[nodeY][pointerY]]!=color[y]||g[nodeY][pointerY]==x)) ^ user.cpp:59:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pointerY<g[nodeY].size()){ ^ user.cpp:97:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[node].size();i++) ^ user.cpp: In function ‘void read(int&)’: user.cpp:16:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp:24:38: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:107:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("disconnect.in","r",stdin); ^ user.cpp:108:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("disconnect.out","w",stdout); ^ user.cpp:110:30: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer,1,DIM,stdin); ^